Most worrisome is a challenge raised by Quine 1956 [1976], §II): how does claiming logical truths to be analytic differ from merely claiming them to be obviously and universally correct, i.e., widely and firmly held beliefs, indistinguishable in kind from banalities like "The earth has existed for many years" or "There have been black dogs"?
The most worrisome of those challenges was the prospect that Earth was losing species the fastest it had in many millions of years, and humans and their activities were largely to blame.
Teenagers are typically treated as adults, with cognitive behavioral therapy that includes strategies like creating a quiet sleeping environment, going to bed at the same time and only when sleepy, focusing on nonstressful images, and challenging worrisome beliefs about insomnia.
What made this challenge particularly worrisome was that this critic was a man of high social rank, fully conversant in classical and modern humanistic culture, and politically connected to the highest ecclesiastical and political authorities in Italy.
For example, in cognitive therapy, it may be important to specifically challenge ruminative or worrisome thoughts.
That my party is so unwilling to open its tent and offers no new and engaging ideas for America's many challenges is beyond worrisome -- it appears to portend the apocalypse of the Democratic Party.
In a recent case that critics consider one of the most worrisome, the Methanex Corporation of Vancouver, British Columbia, is challenging California's decision to phase out the use of a gasoline additive containing methanol, which Methanex makes.
The third challenge may be the most worrisome.
Although these case-patients were not a random sample of the TB population, these data are worrisome, given regional immigration patterns and ongoing challenges within the health system.
